Home / 2,209.02-3,312.20-975.80

Finding the Fourth Proportional to 2,209.02, 3,312.20 and 975.80

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Solution

The fourth proportional to 2,209.02, 3,312.20 and 975.80 is: 1,463.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,209.02 : 3,312.20 = 975.80 : x
  2. Step 2: Convert to fraction form
    2,209.02/3,312.20 = 975.80/x
  3. Step 3: Cross multiply
    2,209.02x = 3,312.20 × 975.80
  4. Step 4: Simplify right side
    2,209.02x = 3,232,044.76
  5. Step 5: Solve for x
    x = 3,232,044.76/2,209.02
  6. Step 6: Final answer
    x = 1,463.11

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.